The stone’s surface needs to be chemically washed and/or ground deep enough to remove all visible signs of anything that was not part of the original stone. Our licensed applicator can advise you on this. The amount of surface grinding/honing will vary depending on the level of damage and the type of stone. The standard process used by others to rejuvenate the stone is to surface grind and hone using water and paste from coarse through to fine diamond disc, requiring several messy processes depending on the level of shine required.
Once this is complete, you are still left without any protection from etching and staining. With the Sheerstone process, the stone is restored by a deep grinding process and a stain remover if necessary, before the coating is applied. Any fine scratches from the grinding process simply disappear. Once the UV coating is cured (which is instantly) it is vacuum dry sanded to the desired finish.